Wannabe's quote: On the whole people with such severe mental illness are incredibly selfish. That is of course due to the illness, but it doesn't make it any easier for those having to be on the receiving end is spot on for me.
Sometimes it's not about being a 'fair-weather friend'. Sometimes it's about having to prioritise your life, the life of your DH/DCs/family etc. I have a very good friend who has been depressed/suicidal on and off for about 10 years. The illness runs on a fairly predictable pattern and she has, over time, excluded all her friends, leaving me as the last one standing. NOT because she's a bad person, but because the 3am talk to me, I need you to be here for me, I can't do this, if I don't talk to someone I'm going to have no choice but to harm myself phone calls are exhausting, especially when you are a single mum, have 2 DCs and work full-time. It's simply not possible to have that level of disruption in your life ongoingly without walking away. I love her, and I'd do anything for her, but the reason I'm still here for her is because I put boundaries in place (which she initially really resented me for) to manage how much of my time was devoted to her needs.
Another good friend has recently been experiencing serious depression and I hit the same obstacles. The hours and hours of phone calls, the expectation that you can and will drop everything else in your life to support them, the I need you here (when 'here' is a 4 hour train ride away), the utter (illness induced) lack of awareness that everyone has demands on their time.
My DH and my (now teen) DDs were incredibly understanding, as I dashed off, yet again for a few days to look after her, as I stopped mid-conversation to answer the phone to her (knowing that it'd be an hours call, minimum) but eventually it started to affect them as well. By wanting, so badly, to help her, to support her and be there for her, I'd turned myself into a crutch for her. I had to, again, put boundaries in place to deal with it. And it's SO hard to do. To say to someone you care about, who is really up against it, "Look, you can't call me 5 times a day. We're going over the same ground and it's not helping you. I have things I need to take care of here. I'll call you, for 15 minutes am and pm. You can't call me in between." I felt like such a bitch. But the first step of putting out a fire is stop chucking petrol on it. Without meaning to, I think I was fostering and facilitating her difficulties. She was refusing professional assistance because talking to you makes me feel better and when I pulled back a bit she had to seek out medical help.
Did it scare the hell out of me? Yes, of course it did. I used to go to bed at night thinking that if she woke up in the night and couldn't call me (I'd set my phone to 'do not disturb') she's try to harm herself. But that wasn't something I could stop. Adults are not the responsibility of their friends. Everyone has a limit.
I agree that by effectively going non-contact overnight the friends have behaved, on the surface, in an abrupt and hurtful manner, but it's hard.
Sorry for the mammoth post...